Re: Is this an MS compiler bug?

From:
Noah Roberts <dont@email.me>
Newsgroups:
comp.lang.c++.moderated
Date:
Mon, 2 May 2011 14:06:47 CST
Message-ID:
<4dbef95a$0$2417$cc2e38e6@news.uslec.net>
On 4/30/2011 4:21 PM, Andy Champ wrote:

Running the following code through Microsoft Visual Studio 2010, I get
an odd error. It looks as though inside this Lambda it know what the
type "V" is - but not properly, because although it can construct an
object of the type it doesn't know what the embedded iterator is. It
looks to me as if Comeau online won't handle it at all - so can some
guru tell me if this is OK or not and/or run it through their own
favourite compiler? If it ought to work I'll raise a bug against MS.

Obviously I have a workaround.

Thanks

Andy

#include <vector>

struct C
{
typedef std::vector<bool> V;

C()
{
auto StoreProtections = [](V v)
{
// We know what a V is...
V vv;

// or do we? This line won't compile.
V::iterator vi;

// We do if we give the containing class
C::V::iterator cvi;
};

// we do now.
V::iterator vi;
}
};

int main()
{
C();
}


Types inside of lambda expressions in VS is all kinds of messed up.
You're lucky you didn't have to re-typedef C to gain access to it.

--
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